A study of chemical carcinogenesis 4. Synthesis of the carbon‐14 labelled carcinogens 5‐methylchrysene, 2‐methyl‐aniline and 3‐methyl‐2‐naphthylamine

Procedures were developed for synthesis of the carcinogenic compounds 5‐methylchrysene‐5‐¹⁴C, 2‐methylaniline‐methyl‐¹⁴C and 3‐methyl‐2‐naphthyl‐amine‐methyl‐¹⁴C. In each case, label was introduced with ¹⁴CO₂ and yields were acceptable for preparation of these compounds for metabolic studies.